Window screen



A. LIBBY wmnow SCREEN Feb. 24, 1931.

Filed Dec. 1, 1926 2 Sheets-Sheet l I AU: art M1111 M M a A. LIBBY WINDOW SCREEN Feb. 24, 1931.

Filed Dec. 1, 1926 Z'ShGQtS-SIIOOT' 2 AlharI Lug Guano/1g Patented Feb. 24, 1931 ALBERT LIBBY, OF WINSLOW, MAINE WINDOW SCREEN Application filed December 1, 1926. Serial No. 151,880.

The present invention relates to improve ments in window screens, and the primary object of the invention resides in the provision of an improved screen adaptedto be 5 removably secured to a sliding window sash, in a manner whereby when the sash is in its closed position the screen will be disposed in a protected and concealed position within a compartment formed in the wall construction adjacent to the window casing, and when the sash is slid to an open position, the screen will move therewith for covering the opening formed by the sliding of the sash.

A further object of the invention resides in the provision of a screen adapted to be detachably secured to a sliding window sash for movement therewith, and embodying features whereby the screen may be contracted for removal of the screen from the grooves in which the sash slides.

A further object of the invention is to provide a screen for attachment to sliding window sashes, in a manner whereby when the sash is in its lowered closed position, the lower rail of the sash is permitted to snugly engage the window sill and allow the sash to act as an effective closure for the window.

A still further object of the invention resides in the provision of a window screen embodying a sheet metal frame having an adjustable member carried by one edge thereof for permitting of the screen being removably positioned in the sash grooves of Window casings.

Other objects and advantages of the invention will be apparent during the course of the following detailed description, taken in connection with the accompanying drawings forming a part of this specification and in which drawings:

Figure 1 is an inside fragmentary plan view of a wall construction and the lower portion of a window casing, showing portions broken away, and showing the screen in position upon the lower sliding sash, and showing the opening or compartment into which the screen moves upon lowering of the sash.

5 Figure 2 is an enlarged fragmentary section on line 2 2 of Figure 1 and looking up wardly in the direction of the arrows.

Figure 3 is a plan view of one of the hanger bolts for removably securing the screen to the window sash.

Figure 4 is an enlarged vertical section on line 4 of Figure 1 and looking in the direction of the arrows.

Figure 5 is an enlarged fragmentary view of one of the upper corners of the screen, the same being shown part in elevation and part in section for illustrating certain details of construction.

Figure 6 is a fragmentary section on line 6-6 of Figure 5.

Figure 7 is an enlarged fragmentary vie of the upper side of the screen and showing the arm carried thereby for preventing possible dropping ofthe screen into the compartment when the screen is detached from the sash.

Referring to the drawings in detail, and

wherein similar reference characters designate corresponding parts throughout the several views, the letter A may designate a Wall construction in which is disposed the window casing B, the casing B slidably receiving up per and lower sashes G and D respectively, and E the improved screen adapted to be mounted for movement with the lower sash D. i

Referring first to the wall A, and which is of frame construction, the same embodies the vertically disposed wall studs lOupon the outer edges of which is mounted the sheathing 11, and at the inner edges, the usual laths and plaster 12, the layers 11 and 12 providing an opening or compartment 13. Mounted across the upper end of the vertical wall studs 10, is the usual header 14: forming the lower portion of an opening in which the Window casing B is disposed.

The casing B and which is of ordinary construction, embodies the sill 15 which is mounted horizontally and directly above the header 14, and the stiles 16 which carry inner and outer stop beads 17 and 18 respectively and a parting bead 19 providing inner and outer sash grooves 21 and 22 respectively which extend to the sill 15. The sash C is adapted for sliding movement in the groove 21, while the sash D is adapted for sliding movement in the groove 22. Extending across the inner edge of the sill 15, is the usual stool 23, the outer edge of which extends flush with the outer edge of the stop bead 17. By observing Figure 4, it will be seen that the sash grooves 21 and 22 are arranged directly over the compartment 13. v

The sash D, and which as before stated is adapted for vertical sliding movement in the groove 22, is also of usual and well known construction and embodies the relatively heavy lower rail 24 which when the sash is in its lowered position, engages the upper face of the sill 15.

The sill 15 and the underlying header 14 are provided with aligning slots 25 which extend from the confronting faces of the stiles 16 and at a location directly below the lower sash rail 24. The wall studs 10, are provided with vertically extending guide grooves 26 which open at their upper end in the slots 25 provided in the header 14. Thus it will be seen that the screen E may readily pass through the aligning slots 25 into the guide grooves 26. By examining Figure 4, it will be seen that the wall A and easing B are of the usual construction, and when desiring to mount a screen as shown, it is merely necessary to provide the slots 25 in the header 14 and sill 15, and the guide grooves 26 in the usual wall studs 10. This providing of the slots 25 and grooves 26 could very easily be accomplished during the construction of the building.

While the device has been shown applied to a hollow wall of frame construction, it will be apparent that if the wall be of masonry, that a suitable compartment may be provided for receiving the screen, when the wall is in the course of construction.

Referring now to the screen E, the same embodies a sheet metal frame comprising side strips 30 and top and bottom rails 31 and 32 respectively. The side strips 30 and bottom rail 32 are of U-shape in formation and are adapted to be clamped about the side and lower edges of a suitable screen material 33 of substantially rectangular shape and of dimensions substantially equal to that of the lower sash D. The lower end of the side strips 30 may be secured to the ends of the bottom rail 32 in any suitable manner for providing a neat joint.

The top rail 31 is of L-shape in cross sec tion, and has its vertical flange 34 secured in any suitable manner to the upper end of the side strips 30 at the normally outer side of the screen material 33 as clearly illustrated in Figure 5. The upper edge of the screen material 33 lies flat upon the inner face of the vertical flange 34, and a plurality of tongues 35 are struck from the flange 34 for clamping engagement over the upper edge of the screen material as is illustrated in Figure 6, and any desired number of these tongues 35 may be struck from the flange for retaining the upper edge of the screen material in a flat position against the inner side of the flange.

The horizontal flange 36 of the top rail 31 extends inwardly over the top edge of the screen and provides an attaching flange whereby the upper edge of the screen may be readily connected with the lower rail 24 of the sash D.

The bottom inner edge of the lower rail 24 is provided throughout its length with a rabhet 37 of a width substantially equal to the width of the top rail 31, and this rabbet is adapted 'to receive the top rail 31 with the horizontal attaching flange 36 lying in surface contact with the upper portion ofthe rabbet'.

Extending through suitable apertures pro vided in the attaching flange 36, are hanger bolts 40, the lag-screw parts 41 of which are screwed into the wooden lower rail 24, while the machine screw parts 42 which extend downwardly thru the attaching flange 36, are adapted to receive wing nuts 43 whereby the screen E may be removably secured to the lower rail of the sash D. It is preferred that the openings in the top flange 36,'through which the hanger bolts 40 extend, be in the form of elongated openings 44 for permitting of slight longitudinal adjustment of. the screen below the sash D.

Carried by the side'strip 30 at one side of the screen E, and extending throughout the height of the screen, is a U-shaped take up rail 45 which is preferably stamped from'sheet metal and disposed with the arms 46 thereof arranged in overlying relation at opposite sides of the side strip. Extending transversely through .the side strip upon which the take up rail is mounted, are clamping bolts 47 which project through transversely extending elongated openings 48 provided in each of the arms 46. Thus it will be seen that these bolts 47 and slots 48 will permit of the outer edge of the take up rail 45 being moved toward and away from the outer edge of the side strip 30. This take up rail 45 aside from providing means whereby the width of the screen may be varied for allowin the side edges thereof to snugly engage the confronting faces of the stiles 16, also affords means whereby the screen may be contracted for permitting of the same being readilyremoved from the sash grooves 22, past the stop beads 17. This take up rail 45 will also permit of the screen being varied in width for proper positioning within window casings of various sizes.

Pivotally mounted midway of its ends to the upper side of the attaching flange 36, is a keeper 50 of a length greater than the width of the attaching flange, and which keeper when the screen is detached from the sash D. is adapted to be turned transversely of the flange in a manner whereby one arm thereof will rest upon the upper face of the stool 23 and'prevent possibilit-yof the screen dropping into the compartment 13 below the window casing. This keeper has been provided for permitting of the screen being de tached from the window sash for permitting of the windows to be cleaned at their outer sides, and when one arm of the keeper is resting upon the tool 23, the outer arm will project past the outer side of the screen in spaced relation above the upper face of the window sill 15 and thus afford a suitable hand grip for permitting of the screen being raised a sufiicient distance so that a person may grasp the L-shaped top rail 31 for attaching of the screen to the window sash. A recess 51 is provided at the central portion of the rabbet 37 for receiving the keeper 50, and it will be seen that when the screen is attached to the window sash, that the elongated keeper is prevented from swinging outwardly from the recess.

The screen E is preferably of such height so that when the sash D is raised to its fullest extent, the bottom rail 32 of the screen will not be withdrawn wholly from the slot provided in the sill 15, and thus insures proper movement of the screen downwardly through the slots and guide grooves 26 when the sash is lowered.

In applying the screen to the sash, the take up rail 45 is first moved inwardly into engagement with its carrying side strip 30, and in which position, the width of the screen is less than the distance between the confronting faces of the stop beads 17. The lower edge of the screen may then be inserted into the slot 25 provided in the sill 15, and the upper edge of the screen moved into the rabbet 37 with the hanger bolts 40 projecting through the elongated openings 44 provided in the top rail 31. The wing nuts 43 may then be started upon the hanger bolts for allowing the screen to hang free upon the lower sash rail, and after which the screen is shifted longitudinally of the lower sash rail until the free side strip 30' snugly engages the inner face of one of the stiles 16 within one of the grooves for the sash D. The wing nuts 43 may then be tightened for rigidly attaching the screen to the sash with one edge of the screen snugly engaging one of the stiles 16. The take up rail 45 may then he slid outwardly by reason of the slots 48 into engagement with the inner face of the opposite stile 16, and after which the nuts of the clamping bolts 47 may be tightened for retaining the outer edge of the take up rail in engagement wit-h the inner face of the stile.

By s0 providing the rabbet 37 at the inner edge of the lower sash rail 24, it will be seen that the outer edge of the lower rail is al lowed to rest fiat upon the upper face of the sill 15 and thus allow for the sash D to act as an efficient closer for the window casing.

From the foregoing description it will be apparent that a novel and improved window screen construction has been provided whereby upon raising of the window sash, the screen will be raised for closing of the opening formed by the raising of the sash, and which screen embodies novel features of construction whereby the same may be readily adjusted to engage the confronting faces of the grooves in which the sash slides, and which adjustable features also permits of the screen being readily removed from the sash grooves when such becomes desirable.

Changes in detail may be made to the specific form of the invention herein shown and described, without departing from the spirit of the invention or the scope of the following claims.

I claim:

1. In combination with a sliding sash having a lower rail, hanger elements carried by the lower rail and having depending threaded projections, a screen embodying a top rail provided with longitudinally extending openings for receiving the threaded extensions of the hanger elements, and means engageable with the threaded extensions for detachably securing the screen to the lower sash rail.

2. In combination with a sliding sash having a lower rail, hanger bolts threaded into the lower rail and having depending threaded portions, a screen having a horizontal flange portion at its upper edge provided with longitudinally extending openings for receiving the threaded extensions of the hanger bolts whereby the screen may be shifted longitudinally of the lower sash rail, and wing nuts threaded upon each extension of the hanger bolts and engaging said flange for adjustably'and removably securing the screen to the sash.

3. The combination with a window sill provided with an elongated slot opening into a compartment therebeneath, of a screen movable into and out of the compartment, and a keeper pivotally carried by the upper side of the screen and capable of being swung to project laterally of the screen to engage upon the sill to prevent dropping of the screen into the compartment.

ALBERT LIBBY. 

